Heat oven to 250 degrees. Spread your popcorn out on two parchment paper lined deep cookie sheets.In a large microwavable bowl, add the sugar, syrup, butter, heat 30 seconds on high. Stir with a wooden spoon to combine, then microwave for 2 more minutes. Now add the Nutella to this mixture, stir until blended and microwave for 2 -1/2 minutes until it looks like it boiling and double in quantity. Remove from the microwave add your baking soda and vanilla stir.Pour evenly over popcorn and spread out on two cookie sheets lined with parchment.

Bake in heated oven of 250 degrees stirring every 10 minutes and baking for 30 minutes or more until popcorn looks crunchy.